Isle Royale Rainfall Forecast

Today 14 Dec
15%
Mon 15 Dec
95%
Tue 16 Dec
15%
Wed 17 Dec
10%
Thu 18 Dec
70%
Fri 19 Dec
20%
Sat 20 Dec
55%

Isle Royale Rainfall Statistics

December Rainfall

Copper Harbor (58.4 miles)

Total Rainfall 2025
24.2in
Daily Average 2025
0.1in
Wettest Day 21 October, 2025
1.7in
Wet Days 2025
131/348 (38%)
Total Rainfall November
1.4in
Daily Average November
0.1in
Wettest Day 26 November, 2025
0.5in
Wet Days November
12/30 (40%)
Total Rainfall December
0.3in
Daily Average December
0.03in
Wettest Day 9 December, 2025
0.1in
Wet Days December
6/14 (43%)

Climate (2010–Present)

Copper Harbor (58.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2020–2024
26.8in
Monthly Average 2020–2025
2.3in
Daily Average 2020–2025
0.1in
Wettest Day 23 July, 2021
2.7in

Get WillyWeather+ to remove ads